3. Installation
ALSPA PROFIBUS Field Bus Coupler
Page 3-16
Technical Manual
(09/06)
Pin 8 = DATA–
3.7.4 PROFIBUS
Cable
Twisted pair shielded cable equivalent to Belden 8227 is
recommended.
-
Two core cable, screened and twisted.
-
Resistance 100 to 120 ohm at f > 100 kHz.
-
Capacitance < 60 pF per meter.
-
Minimum cross section of 0.22 mm
2
(24 AWG).
3.7.5 PROFIBUS
Earthing
To ensure an EMC compliant installation, the network cable screens
must be continuous.
On the PROFIBUS board, the protective earth (PE) is connected
through the flat connector PE2 to the cable shield. The MV3000e
enclosure must be connected to PE with the largest practicable
cable cross-section.
Figure 3-12 Protective earth arrangement
Socket
PROFIBUS board
RXD/TXD
1
6
2
3
7
8
4
9
Plug
5
PE2
PE1
LS3
6
1
LS2
LS1
0V electronics
LS4
DC 5 V isolated
DC 0V isolated
5
DC+5V ISO
DC 0V ISO
8
7
2
3
4
9
DC 0V isolated
TXD/RXD
LS5
LS6
Drive Mounting Plate
50 cm or less
Содержание ALSPA MV3000e
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